In the years after the First World War, pairings in England of older, upper-class women and younger men were common. The idea for the play was put in Coward's mind by an incident at a nightclub. Grace Forster, the elegant mother of his friend Stewart Forster, was talking to a young admirer, when a young woman said, in earshot of Coward and Forster, "Will you
look at that old hag over there with the young man in tow; she's old enough to be his mother". Forster paid no attention, and Coward immediately went across and embraced Grace, as a silent rebuke to the young woman who had made the remark. The episode led him to consider how a "mother–young son–young lover triangle" might be the basis of a play. To add to the dramatic effect of his play, Coward included a further source of conflict between the mother, Florence, and son, Nicky. Coward's friend and biographer
Cole Lesley records, "this came easily to him from his unlikely pre-occupation … with the subject of drug addiction". Coward's biographer
Philip Hoare sees clues to Nicky's unconventional sexuality in his intimate friendship with John Bagot (an offstage character), and his implausible engagement to a brisk young woman, Bunty Mainwaring; Hoare describes her as "a 'beard', a guise of heterosexuality". Florence's lover Tom finds Nicky "effeminate". The literary critic
John Lahr writes that Coward pushed at the prevailing moral boundaries of the day: "His straight-talking about homosexuality – the issue disguised as drug-taking in
The Vortex and the code behind the frivolity in his great comedies – was as far as he could go." , seen here in Coward's 1923 play
The Young Idea, dropped out of the leading role at the last moment but later played the role on tour. Until
1968 the English theatre was subject to official censorship; plays had to be licensed by the
Lord Chamberlain's Office.
The Vortex barely survived the censor's scrutiny, but Coward pleaded his case in person to the Lord Chamberlain,
Lord Cromer. He persuaded Cromer that the play was "a moral tract", and despite reservations expressed to the Chamberlain by
King George V and others, Cromer granted a licence. Leading London managements considered staging the piece, but some shied away from the scandalous content, and others did not want Coward to play the lead. As one of Coward's principal objects in writing the play had been "to write a good play with a whacking great part in it for myself", he abandoned attempts to convince
West End managements, and arranged to stage the play at the
Everyman Theatre,
Hampstead, a fringe venue in north London. When the money for the production threatened to run out during rehearsals, Coward secured the necessary funding from his friend the author
Michael Arlen. As well as co-starring, Coward directed the play. Upset by a last-minute revision that increased Coward's role and, she believed, diminished the importance of hers, the female star,
Kate Cutler, dropped out less than two weeks before the premiere. Coward was able to engage the veteran actress
Lilian Braithwaite, who accepted the part for the small salary offered and learned it at very short notice. ==Original production==